Motor-driven vehicle

Abstract

A motor-driven vehicle capable of increasing the degree of freedom of wiring for a motor. A drive wheel having a motor with a stator and a rotor serving as a drive source disposed in a wheel hub is rotatably supported on a wheel shaft between right and left forks. The stator is provided in a body-side retainer member fixed to a vehicle body, the rotor is rotatably supported on the wheel shaft, and wiring for the motor is passed through the body-side retainer member. The brake mechanism is provided on the drive wheel. As seen from a front of a vehicle body, the wheel hub is rotatably supported on the wheel shaft on one lateral side alone from a body center and the brake mechanism is disposed on one lateral side from a body center and the motor is disposed on the other lateral side from the body center.

What is claimed is: 
     
       1. A motor-driven vehicle in which a drive wheel having a motor with a stator and a rotor serving as a drive source disposed in a wheel hub is rotatably supported on a wheel shaft between right and left forks, the stator being provided in a body-side retainer member fixed to a vehicle body, the rotor being rotatably supported on the wheel shaft, wiring for the motor being passed through the body-side retainer member,
 wherein the wheel hub is rotatably supported only on a portion of the wheel shaft that is located on one lateral side of a body center (C), the body center (C) being midway between the right and left forks. 
 
     
     
       2. The motor-driven vehicle according to  claim 1 ,
 wherein in the wheel hub, around the wheel shaft, an annular end part opened to the other lateral side with respect to the one lateral side is provided on an outer periphery of a perimeter of the rotor of the motor; 
 the body-side retainer member is provided on the other lateral side and, on the body-side retainer member, around the wheel shaft, an annular end part opened to the one lateral side is provided on the outer periphery of the perimeter of the rotor of the motor; and 
 the annular end part of the wheel hub and the annular end of the body-side retainer member are overlapped in an axial direction of the wheel shaft and, in an overlapped portion, a seal is provided between the wheel hub and the body-side retainer member. 
 
     
     
       3. The motor-driven vehicle according to  claim 1 , wherein the rotor of the motor is coupled to the wheel hub through a one-way clutch. 
     
     
       4. The motor-driven vehicle according to  claim 2 , wherein the rotor of the motor is coupled to the wheel hub through a one-way clutch. 
     
     
       5. The motor-driven vehicle according to  claim 3 , wherein a power transmission member is coupled to the rotor and the one-way clutch is provided in an outer peripheral portion of the power transmission member between the power transmission member and the wheel hub. 
     
     
       6. The motor-driven vehicle according to  claim 1 , wherein the wiring is passed through a portion of the body-side retainer member that is separate from other portions of the body-side retainer portion that are overlapped with the wheel hub. 
     
     
       7. The motor-driven vehicle according to  claim 1 , wherein
 the wheel hub is rotatably supported on the wheel shaft through a pair of ball bearings located on the one lateral side of the body center (C). 
 
     
     
       8. The motor-driven vehicle according to  claim 3 , wherein the wiring is passed through a portion of the body-side retainer member that is separate from other portions of the body-side retainer portion that are overlapped with the wheel hub. 
     
     
       9. The motor-driven vehicle according to  claim 4 , wherein the wiring is passed through a portion of the body-side retainer member that is separate from other portions of the body-side retainer portion that are overlapped with the wheel hub. 
     
     
       10. The motor-driven vehicle according to  claim 1 , wherein the wiring is passed through the body-side retainer member behind the front fork and is laid along the front fork. 
     
     
       11. The motor-driven vehicle according to  claim 2 , wherein the wiring is passed through the body-side retainer member behind the front fork and is laid along the front fork. 
     
     
       12. The motor-driven vehicle according to  claim 3 , wherein the wiring is passed through the body-side retainer member behind the front fork and is laid along the front fork. 
     
     
       13. The motor-driven vehicle according to  claim 5 , wherein the wiring is passed through the body-side retainer member behind the front fork and is laid along the front fork. 
     
     
       14. The motor-driven vehicle according to  claim 6 , wherein the wiring is passed through the body-side retainer member behind the front fork and is laid along the front fork. 
     
     
       15. A motor-driven vehicle in which a drive wheel having a motor with a stator and a rotor serving as a drive source disposed inside a wheel hub is rotatably supported on a wheel shaft between right and left forks,
 wherein a brake mechanism is provided on the drive wheel and, as seen from a front of a vehicle body, the brake mechanism is disposed on one lateral side from a body center and the motor is disposed on the other lateral side from the body center, 
 wherein the wheel hub is rotatably supported only on a portion of the wheel shaft that is located on the one lateral side of a body center (C), the body center (C) being midway between the right and left forks. 
 
     
     
       16. The motor-driven vehicle according to  claim 15 , wherein, as seen from the front of the vehicle body, the brake mechanism is disposed on one lateral side from the body center between front forks and the motor is disposed on the other lateral side from the body center between the front forks, and
 the wheel hub is rotatably supported on the wheel shaft through a pair of ball bearings located on the one lateral side of the body center (C). 
 
     
     
       17. A motor-driven vehicle in which a drive wheel having a motor with a stator and a rotor serving as a drive source disposed inside a wheel hub is rotatably supported on a wheel shaft between right and left forks,
 wherein a brake mechanism is provided on the drive wheel and, as seen from a front of a vehicle body, the brake mechanism is disposed on one lateral side from a body center (C) and the motor is disposed on the other lateral side from the body center (C), 
 wherein the wheel hub is rotatably supported on the wheel shaft on the one lateral side and, on the wheel hub, around the wheel shaft, an annular end part opened to the other lateral side is provided on an outer periphery of a perimeter of the rotor of the motor; 
 on the other lateral side, a body-side retainer member is fixed to the vehicle body and to which the stator of the motor is fixed is provided and an annular end part opened to the one lateral side is provided, in the body-side retainer member, around the wheel shaft on the outer periphery of the perimeter of the rotor of the motor; and 
 the annular end part of the wheel hub extends toward the other lateral side across the body center so as to overlap the annular end part of the body-side retainer member in an axial direction of the wheel shaft. 
 
     
     
       18. The motor-driven vehicle according to  claim 15 , wherein the brake mechanism is disposed closer to the wheel hub and the motor is disposed closer to the body-side retainer member. 
     
     
       19. The motor-driven vehicle according to  claim 15 , wherein the rotor of the motor is coupled to the wheel hub through a one-way clutch. 
     
     
       20. The motor-driven vehicle according to  claim 19 , wherein the rotor is rotatably supported on the wheel shaft by being coupled to a power transmission member rotatably supported on the wheel shaft and the one-way clutch is provided in an outer peripheral portion of the power transmission member between the power transmission member and the wheel hub.